Abstract:
A control unit suppresses fluctuation in speed of a motor in a printer. The control unit has a speed detecting part for detecting the speed of the motor in a predetermined period tv, and an average speed calculating part for calculating an average speed based on a current speed detected by the speed detecting part, and on a speed which has been detected n (n≧2) periods tv before, ntv corresponding to substantially half period of the fluctuation in speed of the motor. The control unit also has a speed control part for controlling the speed of the motor based on a deviation of the average speed from a target speed of the motor.
Abstract:
In a video display terminal (VDT) adapter connected to a moving picture output device, inputting means inputs, from the moving picture output device, an input moving picture signal indicative of input moving pictures having brightness which changes drastically. Connected to the inputting means, picture temporal frequency attenuator means selectively attenuates a particular frequency band of the input moving picture signal to produce a smoothly-changing moving picture signal indicative of smoothly-changing moving pictures. The particular frequency band includes human sensitive frequency components. Connected to the picture temporal frequency attenuator means, outputting means outputs the smoothly-changing moving picture signal as an output moving picture signal. The particular frequency band may lie on a range not less than 7 Hz.
Abstract:
An apparatus for soldering a solder on a difficultly solderable substrate comprises a vibration tip which is rotatably held and is mounted on an ultrasonic oscillation mechanism and is slidably held to the vertical direction to an object for soldering. A needle part is placed in a predetermined distance and a predetermined direction from the edge of said vibration tip and said needle part is projected in substantially the same level as that of said edge of said vibration tip.
Abstract:
A method for producing a molten glass conveying equipment element. The molten glass conveying equipment element has a conduit structure for molten glass containing at least one conduit comprising platinum or a platinum alloy, a first ceramic structure provided around the conduit and a second ceramic structure located around the first ceramic structure. The method includes filling a gap between the conduit and the second ceramic structure with a slurry body, and sintering the slurry body at a temperature of 1,300 to 1,550° C., thereby forming the first ceramic structure. The slurry body is prepared by blending specific first particles, specific second particles and specific third particles with specific mass ratios.
Abstract:
A fuel cell stack includes a heat exchange unit that performs heat exchange between a gas mixture containing source hydrogen and a circulating gas and cooling water used for controlling the temperature of the fuel cell stack. A system controller adjusts the temperature of the cooling water by controlling a temperature control unit on the basis of the temperature of source hydrogen flowing into a junction at which the source hydrogen and a circulating gas are mixed such that the temperature of a source/recirculated hydrogen mixture that is mixed at the junction and that is supplied to the fuel cell stack is kept within a managed temperature range.
Abstract:
A printing device includes a first roller for rotatably retaining a roll body where a medium is rolled, a first motor for rotating the first roller, a second roller installed further to the downstream side of the roll body in the feeding direction of the medium to feed the medium in the feeding direction or in a reverse feeding direction which is opposite to the feeding direction corresponding to the rotating direction, a second motor for rotating the second roller, and a controller which causes the medium to become slack the first roller and the second roller by feeding the medium by a predetermined feeding amount in the reverse feeding direction by the second motor, and then rotates the roll body in a winding-up direction by the first motor so that the slackness decreases to calculate the diameter of the roll body based on the rotation amount of the first roller at that time and the predetermined feeding amount.
Abstract:
A fuel cell system has a purge valve that adjusts the amount of nitrogen in a hydrogen circulation channel and a fuel electrode to be discharged through a discharge channel. A purge rate correcting unit variably sets a target control value of the nitrogen content in the hydrogen circulation channel and the fuel electrode by taking into account whether a driving mode is set in a normal power generation mode or an idle mode. An opening of the purge valve is controlled on the basis of the target control value.
Abstract:
A printing apparatus including: a first motor configured to provide a drive force for rotating a roll member that is a wound medium; a second motor configured to provide a drive force for driving a transporting drive roller provided on a downstream side of the roll member along a feeding direction of the medium for transporting the medium; and a control unit configured to drive at least one of the first motor and the second motor to cancel the slackness of the medium generated between the roll member and the transporting drive roller.
Abstract:
Moisture caused by humidity in the fuel gas and water vapor from the water that is generated become condensed inside a fuel cell when power generation in the fuel cell is temporarily stopped, making obstruction to the fuel gas flow channel when power generation is restarted possible. A fuel cell includes an electrolyte membrane sandwiched between a fuel electrode and an oxidant electrode. Oxidant is supplied to the oxidant electrode in the fuel cell, and the fuel emitted from the fuel electrode of the fuel cell is resupplied back to the fuel electrode. When requested power generating capacity for the fuel cell is less than a prescribed capacity, the oxidant supply is temporarily stopped while the fuel continues to circulate in order to prevent obstruction in the fuel flow channel due to water condensation, making a reliable fuel supply becomes possible.